1 /* Lisp functions for making directory listings.
2 Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 #include <sys/types.h>
42 /* The d_nameln member of a struct dirent includes the '\0' character
43 on some systems, but not on others. What's worse, you can't tell
44 at compile-time which one it will be, since it really depends on
45 the sort of system providing the filesystem you're reading from,
46 not the system you are running on. Paul Eggert
47 <eggert@bi.twinsun.com> says this occurs when Emacs is running on a
48 SunOS 4.1.2 host, reading a directory that is remote-mounted from a
49 Solaris 2.1 host and is in a native Solaris 2.1 filesystem.
51 Since applying strlen to the name always works, we'll just do that. */
52 #define NAMLEN(p) strlen (p->d_name)
54 #ifdef SYSV_SYSTEM_DIR
57 #define DIRENTRY struct dirent
59 #else /* not SYSV_SYSTEM_DIR */
61 #ifdef NONSYSTEM_DIR_LIBRARY
63 #else /* not NONSYSTEM_DIR_LIBRARY */
69 #endif /* not NONSYSTEM_DIR_LIBRARY */
74 #define DIRENTRY struct direct
76 extern DIR *opendir ();
77 extern struct direct
*readdir ();
79 #endif /* not MSDOS */
80 #endif /* not SYSV_SYSTEM_DIR */
83 #define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0)
85 #define DIRENTRY_NONEMPTY(p) ((p)->d_ino)
95 /* Returns a search buffer, with a fastmap allocated and ready to go. */
96 extern struct re_pattern_buffer
*compile_pattern ();
98 /* From filemode.c. Can't go in Lisp.h because of `stat'. */
99 extern void filemodestring
P_ ((struct stat
*, char *));
101 /* if system does not have symbolic links, it does not have lstat.
102 In that case, use ordinary stat instead. */
108 extern int completion_ignore_case
;
109 extern Lisp_Object Vcompletion_regexp_list
;
110 extern Lisp_Object Vfile_name_coding_system
, Vdefault_file_name_coding_system
;
112 Lisp_Object Vcompletion_ignored_extensions
;
113 Lisp_Object Qcompletion_ignore_case
;
114 Lisp_Object Qdirectory_files
;
115 Lisp_Object Qdirectory_files_and_attributes
;
116 Lisp_Object Qfile_name_completion
;
117 Lisp_Object Qfile_name_all_completions
;
118 Lisp_Object Qfile_attributes
;
119 Lisp_Object Qfile_attributes_lessp
;
121 static int scmp
P_ ((unsigned char *, unsigned char *, int));
125 directory_files_internal_unwind (dh
)
128 DIR *d
= (DIR *) ((XINT (XCAR (dh
)) << 16) + XINT (XCDR (dh
)));
133 /* Function shared by Fdirectory_files and Fdirectory_files_and_attributes.
134 When ATTRS is zero, return a list of directory filenames; when
135 non-zero, return a list of directory filenames and their attributes. */
138 directory_files_internal (directory
, full
, match
, nosort
, attrs
)
139 Lisp_Object directory
, full
, match
, nosort
;
143 int directory_nbytes
;
144 Lisp_Object list
, dirfilename
, encoded_directory
;
145 struct re_pattern_buffer
*bufp
= NULL
;
147 int count
= specpdl_ptr
- specpdl
;
148 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
152 /* Because of file name handlers, these functions might call
153 Ffuncall, and cause a GC. */
154 list
= encoded_directory
= dirfilename
= Qnil
;
155 GCPRO5 (match
, directory
, list
, dirfilename
, encoded_directory
);
156 directory
= Fexpand_file_name (directory
, Qnil
);
157 dirfilename
= Fdirectory_file_name (directory
);
161 CHECK_STRING (match
);
163 /* MATCH might be a flawed regular expression. Rather than
164 catching and signaling our own errors, we just call
165 compile_pattern to do the work for us. */
166 /* Pass 1 for the MULTIBYTE arg
167 because we do make multibyte strings if the contents warrant. */
169 bufp
= compile_pattern (match
, 0,
170 buffer_defaults
.downcase_table
, 0, 1);
172 bufp
= compile_pattern (match
, 0, Qnil
, 0, 1);
176 /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run
177 run_pre_post_conversion_on_str which calls Lisp directly and
179 dirfilename
= ENCODE_FILE (dirfilename
);
180 encoded_directory
= ENCODE_FILE (directory
);
182 /* Now *bufp is the compiled form of MATCH; don't call anything
183 which might compile a new regexp until we're done with the loop! */
185 /* Do this opendir after anything which might signal an error; if
186 an error is signaled while the directory stream is open, we
187 have to make sure it gets closed, and setting up an
188 unwind_protect to do so would be a pain. */
191 d
= opendir (XSTRING (dirfilename
)->data
);
193 report_file_error ("Opening directory", Fcons (directory
, Qnil
));
195 /* Unfortunately, we can now invoke expand-file-name and
196 file-attributes on filenames, both of which can throw, so we must
197 do a proper unwind-protect. */
198 record_unwind_protect (directory_files_internal_unwind
,
199 Fcons (make_number (((unsigned long) d
) >> 16),
200 make_number (((unsigned long) d
) & 0xffff)));
202 directory_nbytes
= STRING_BYTES (XSTRING (directory
));
203 re_match_object
= Qt
;
205 /* Decide whether we need to add a directory separator. */
207 if (directory_nbytes
== 0
208 || !IS_ANY_SEP (XSTRING (directory
)->data
[directory_nbytes
- 1]))
212 /* Loop reading blocks until EOF or error. */
219 if (dp
== NULL
&& errno
== EAGAIN
)
226 if (DIRENTRY_NONEMPTY (dp
))
230 Lisp_Object name
, finalname
;
231 struct gcpro gcpro1
, gcpro2
;
234 name
= finalname
= make_unibyte_string (dp
->d_name
, len
);
235 GCPRO2 (finalname
, name
);
237 /* Note: ENCODE_FILE can GC; it should protect its argument,
239 name
= DECODE_FILE (name
);
240 len
= STRING_BYTES (XSTRING (name
));
242 /* Now that we have unwind_protect in place, we might as well
243 allow matching to be interrupted. */
248 || (0 <= re_search (bufp
, XSTRING (name
)->data
, len
, 0, len
, 0)))
257 Lisp_Object fullname
;
258 int nbytes
= len
+ directory_nbytes
+ needsep
;
261 fullname
= make_uninit_multibyte_string (nbytes
, nbytes
);
262 bcopy (XSTRING (directory
)->data
, XSTRING (fullname
)->data
,
266 XSTRING (fullname
)->data
[directory_nbytes
] = DIRECTORY_SEP
;
268 bcopy (XSTRING (name
)->data
,
269 XSTRING (fullname
)->data
+ directory_nbytes
+ needsep
,
272 nchars
= chars_in_text (XSTRING (fullname
)->data
, nbytes
);
274 /* Some bug somewhere. */
278 XSTRING (fullname
)->size
= nchars
;
279 if (nchars
== nbytes
)
280 SET_STRING_BYTES (XSTRING (fullname
), -1);
282 finalname
= fullname
;
289 /* Construct an expanded filename for the directory entry.
290 Use the decoded names for input to Ffile_attributes. */
291 Lisp_Object decoded_fullname
, fileattrs
;
292 struct gcpro gcpro1
, gcpro2
;
294 decoded_fullname
= fileattrs
= Qnil
;
295 GCPRO2 (decoded_fullname
, fileattrs
);
297 /* Both Fexpand_file_name and Ffile_attributes can GC. */
298 decoded_fullname
= Fexpand_file_name (name
, directory
);
299 fileattrs
= Ffile_attributes (decoded_fullname
);
301 list
= Fcons (Fcons (finalname
, fileattrs
), list
);
305 list
= Fcons (finalname
, list
);
314 retry_p
|= errno
== EINTR
;
319 /* Discard the unwind protect. */
320 specpdl_ptr
= specpdl
+ count
;
329 list
= Fsort (Fnreverse (list
),
330 attrs
? Qfile_attributes_lessp
: Qstring_lessp
);
332 RETURN_UNGCPRO (list
);
336 DEFUN ("directory-files", Fdirectory_files
, Sdirectory_files
, 1, 4, 0,
337 doc
: /* Return a list of names of files in DIRECTORY.
338 There are three optional arguments:
339 If FULL is non-nil, return absolute file names. Otherwise return names
340 that are relative to the specified directory.
341 If MATCH is non-nil, mention only file names that match the regexp MATCH.
342 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
343 NOSORT is useful if you plan to sort the result yourself. */)
344 (directory
, full
, match
, nosort
)
345 Lisp_Object directory
, full
, match
, nosort
;
349 /* If the file name has special constructs in it,
350 call the corresponding file handler. */
351 handler
= Ffind_file_name_handler (directory
, Qdirectory_files
);
357 args
[1] = Qdirectory_files
;
362 return Ffuncall (6, args
);
365 return directory_files_internal (directory
, full
, match
, nosort
, 0);
368 DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes
,
369 Sdirectory_files_and_attributes
, 1, 4, 0,
370 doc
: /* Return a list of names of files and their attributes in DIRECTORY.
371 There are three optional arguments:
372 If FULL is non-nil, return absolute file names. Otherwise return names
373 that are relative to the specified directory.
374 If MATCH is non-nil, mention only file names that match the regexp MATCH.
375 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
376 NOSORT is useful if you plan to sort the result yourself. */)
377 (directory
, full
, match
, nosort
)
378 Lisp_Object directory
, full
, match
, nosort
;
382 /* If the file name has special constructs in it,
383 call the corresponding file handler. */
384 handler
= Ffind_file_name_handler (directory
, Qdirectory_files_and_attributes
);
390 args
[1] = Qdirectory_files_and_attributes
;
395 return Ffuncall (6, args
);
398 return directory_files_internal (directory
, full
, match
, nosort
, 1);
402 Lisp_Object
file_name_completion ();
404 DEFUN ("file-name-completion", Ffile_name_completion
, Sfile_name_completion
,
406 doc
: /* Complete file name FILE in directory DIRECTORY.
407 Returns the longest string
408 common to all file names in DIRECTORY that start with FILE.
409 If there is only one and FILE matches it exactly, returns t.
410 Returns nil if DIR contains no name starting with FILE.
412 This function ignores some of the possible completions as
413 determined by the variable `completion-ignored-extensions', which see. */)
415 Lisp_Object file
, directory
;
419 /* If the directory name has special constructs in it,
420 call the corresponding file handler. */
421 handler
= Ffind_file_name_handler (directory
, Qfile_name_completion
);
423 return call3 (handler
, Qfile_name_completion
, file
, directory
);
425 /* If the file name has special constructs in it,
426 call the corresponding file handler. */
427 handler
= Ffind_file_name_handler (file
, Qfile_name_completion
);
429 return call3 (handler
, Qfile_name_completion
, file
, directory
);
431 return file_name_completion (file
, directory
, 0, 0);
434 DEFUN ("file-name-all-completions", Ffile_name_all_completions
,
435 Sfile_name_all_completions
, 2, 2, 0,
436 doc
: /* Return a list of all completions of file name FILE in directory DIRECTORY.
437 These are all file names in directory DIRECTORY which begin with FILE. */)
439 Lisp_Object file
, directory
;
443 /* If the directory name has special constructs in it,
444 call the corresponding file handler. */
445 handler
= Ffind_file_name_handler (directory
, Qfile_name_all_completions
);
447 return call3 (handler
, Qfile_name_all_completions
, file
, directory
);
449 /* If the file name has special constructs in it,
450 call the corresponding file handler. */
451 handler
= Ffind_file_name_handler (file
, Qfile_name_all_completions
);
453 return call3 (handler
, Qfile_name_all_completions
, file
, directory
);
455 return file_name_completion (file
, directory
, 1, 0);
458 static int file_name_completion_stat ();
461 file_name_completion (file
, dirname
, all_flag
, ver_flag
)
462 Lisp_Object file
, dirname
;
463 int all_flag
, ver_flag
;
466 int bestmatchsize
= 0, skip
;
467 register int compare
, matchsize
;
468 unsigned char *p1
, *p2
;
470 Lisp_Object bestmatch
, tem
, elt
, name
;
471 Lisp_Object encoded_file
;
472 Lisp_Object encoded_dir
;
476 int count
= specpdl_ptr
- specpdl
;
477 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
, gcpro5
;
482 extern DIRENTRY
* readdirver ();
484 DIRENTRY
*((* readfunc
) ());
486 /* Filename completion on VMS ignores case, since VMS filesys does. */
487 specbind (Qcompletion_ignore_case
, Qt
);
491 readfunc
= readdirver
;
492 file
= Fupcase (file
);
497 #ifdef FILE_SYSTEM_CASE
498 file
= FILE_SYSTEM_CASE (file
);
501 encoded_file
= encoded_dir
= Qnil
;
502 GCPRO5 (file
, dirname
, bestmatch
, encoded_file
, encoded_dir
);
503 dirname
= Fexpand_file_name (dirname
, Qnil
);
505 /* Do completion on the encoded file name
506 because the other names in the directory are (we presume)
507 encoded likewise. We decode the completed string at the end. */
508 encoded_file
= ENCODE_FILE (file
);
510 encoded_dir
= ENCODE_FILE (dirname
);
512 /* With passcount = 0, ignore files that end in an ignored extension.
513 If nothing found then try again with passcount = 1, don't ignore them.
514 If looking for all completions, start with passcount = 1,
515 so always take even the ignored ones.
517 ** It would not actually be helpful to the user to ignore any possible
518 completions when making a list of them.** */
520 for (passcount
= !!all_flag
; NILP (bestmatch
) && passcount
< 2; passcount
++)
522 d
= opendir (XSTRING (Fdirectory_file_name (encoded_dir
))->data
);
524 report_file_error ("Opening directory", Fcons (dirname
, Qnil
));
526 /* Loop reading blocks */
527 /* (att3b compiler bug requires do a null comparison this way) */
534 dp
= (*readfunc
) (d
);
542 if (!NILP (Vquit_flag
) && NILP (Vinhibit_quit
))
544 if (! DIRENTRY_NONEMPTY (dp
)
545 || len
< XSTRING (encoded_file
)->size
546 || 0 <= scmp (dp
->d_name
, XSTRING (encoded_file
)->data
,
547 XSTRING (encoded_file
)->size
))
550 if (file_name_completion_stat (encoded_dir
, dp
, &st
) < 0)
553 directoryp
= ((st
.st_mode
& S_IFMT
) == S_IFDIR
);
557 #ifndef TRIVIAL_DIRECTORY_ENTRY
558 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
560 /* "." and ".." are never interesting as completions, but are
561 actually in the way in a directory contains only one file. */
562 if (!passcount
&& TRIVIAL_DIRECTORY_ENTRY (dp
->d_name
))
564 if (!passcount
&& len
> XSTRING (encoded_file
)->size
)
565 /* Ignore directories if they match an element of
566 completion-ignored-extensions which ends in a slash. */
567 for (tem
= Vcompletion_ignored_extensions
;
568 CONSP (tem
); tem
= XCDR (tem
))
575 elt_len
= XSTRING (elt
)->size
- 1; /* -1 for trailing / */
578 p1
= XSTRING (elt
)->data
;
579 if (p1
[elt_len
] != '/')
581 skip
= len
- elt_len
;
585 if (0 <= scmp (dp
->d_name
+ skip
, p1
, elt_len
))
592 /* Compare extensions-to-be-ignored against end of this file name */
593 /* if name is not an exact match against specified string */
594 if (!passcount
&& len
> XSTRING (encoded_file
)->size
)
595 /* and exit this for loop if a match is found */
596 for (tem
= Vcompletion_ignored_extensions
;
597 CONSP (tem
); tem
= XCDR (tem
))
600 if (!STRINGP (elt
)) continue;
601 skip
= len
- XSTRING (elt
)->size
;
602 if (skip
< 0) continue;
604 if (0 <= scmp (dp
->d_name
+ skip
,
606 XSTRING (elt
)->size
))
612 /* If an ignored-extensions match was found,
613 don't process this name as a completion. */
614 if (!passcount
&& CONSP (tem
))
621 XSETFASTINT (zero
, 0);
623 /* Ignore this element if it fails to match all the regexps. */
624 for (regexps
= Vcompletion_regexp_list
; CONSP (regexps
);
625 regexps
= XCDR (regexps
))
627 tem
= Fstring_match (XCAR (regexps
),
628 make_string (dp
->d_name
, len
), zero
);
636 /* Update computation of how much all possible completions match */
640 if (all_flag
|| NILP (bestmatch
))
642 /* This is a possible completion */
645 /* This completion is a directory; make it end with '/' */
646 name
= Ffile_name_as_directory (make_string (dp
->d_name
, len
));
649 name
= make_string (dp
->d_name
, len
);
652 name
= DECODE_FILE (name
);
653 bestmatch
= Fcons (name
, bestmatch
);
658 bestmatchsize
= XSTRING (name
)->size
;
663 compare
= min (bestmatchsize
, len
);
664 p1
= XSTRING (bestmatch
)->data
;
665 p2
= (unsigned char *) dp
->d_name
;
666 matchsize
= scmp(p1
, p2
, compare
);
669 if (completion_ignore_case
)
671 /* If this is an exact match except for case,
672 use it as the best match rather than one that is not
673 an exact match. This way, we get the case pattern
674 of the actual match. */
675 /* This tests that the current file is an exact match
676 but BESTMATCH is not (it is too long). */
677 if ((matchsize
== len
678 && matchsize
+ !!directoryp
679 < XSTRING (bestmatch
)->size
)
681 /* If there is no exact match ignoring case,
682 prefer a match that does not change the case
684 /* If there is more than one exact match aside from
685 case, and one of them is exact including case,
687 /* This == checks that, of current file and BESTMATCH,
688 either both or neither are exact. */
691 (matchsize
+ !!directoryp
692 == XSTRING (bestmatch
)->size
))
693 && !bcmp (p2
, XSTRING (encoded_file
)->data
, XSTRING (encoded_file
)->size
)
694 && bcmp (p1
, XSTRING (encoded_file
)->data
, XSTRING (encoded_file
)->size
)))
696 bestmatch
= make_string (dp
->d_name
, len
);
698 bestmatch
= Ffile_name_as_directory (bestmatch
);
702 /* If this dirname all matches, see if implicit following
705 && compare
== matchsize
706 && bestmatchsize
> matchsize
707 && IS_ANY_SEP (p1
[matchsize
]))
709 bestmatchsize
= matchsize
;
716 bestmatch
= unbind_to (count
, bestmatch
);
718 if (all_flag
|| NILP (bestmatch
))
720 if (STRINGP (bestmatch
))
721 bestmatch
= DECODE_FILE (bestmatch
);
724 if (matchcount
== 1 && bestmatchsize
== XSTRING (file
)->size
)
726 bestmatch
= Fsubstring (bestmatch
, make_number (0),
727 make_number (bestmatchsize
));
728 /* Now that we got the right initial segment of BESTMATCH,
729 decode it from the coding system in use. */
730 bestmatch
= DECODE_FILE (bestmatch
);
736 return Fsignal (Qquit
, Qnil
);
739 /* Compare exactly LEN chars of strings at S1 and S2,
740 ignoring case if appropriate.
741 Return -1 if strings match,
742 else number of chars that match at the beginning. */
746 register unsigned char *s1
, *s2
;
749 register int l
= len
;
751 if (completion_ignore_case
)
753 while (l
&& DOWNCASE (*s1
++) == DOWNCASE (*s2
++))
758 while (l
&& *s1
++ == *s2
++)
768 file_name_completion_stat (dirname
, dp
, st_addr
)
771 struct stat
*st_addr
;
773 int len
= NAMLEN (dp
);
774 int pos
= XSTRING (dirname
)->size
;
776 char *fullname
= (char *) alloca (len
+ pos
+ 2);
780 /* Some fields of struct stat are *very* expensive to compute on MS-DOS,
781 but aren't required here. Avoid computing the following fields:
782 st_inode, st_size and st_nlink for directories, and the execute bits
783 in st_mode for non-directory files with non-standard extensions. */
785 unsigned short save_djstat_flags
= _djstat_flags
;
787 _djstat_flags
= _STAT_INODE
| _STAT_EXEC_MAGIC
| _STAT_DIRSIZE
;
788 #endif /* __DJGPP__ > 1 */
791 bcopy (XSTRING (dirname
)->data
, fullname
, pos
);
793 if (!IS_DIRECTORY_SEP (fullname
[pos
- 1]))
794 fullname
[pos
++] = DIRECTORY_SEP
;
797 bcopy (dp
->d_name
, fullname
+ pos
, len
);
798 fullname
[pos
+ len
] = 0;
801 /* We want to return success if a link points to a nonexistent file,
802 but we want to return the status for what the link points to,
803 in case it is a directory. */
804 value
= lstat (fullname
, st_addr
);
805 stat (fullname
, st_addr
);
808 value
= stat (fullname
, st_addr
);
811 _djstat_flags
= save_djstat_flags
;
812 #endif /* __DJGPP__ > 1 */
820 DEFUN ("file-name-all-versions", Ffile_name_all_versions
,
821 Sfile_name_all_versions
, 2, 2, 0,
822 doc
: /* Return a list of all versions of file name FILE in directory DIRECTORY. */)
824 Lisp_Object file
, directory
;
826 return file_name_completion (file
, directory
, 1, 1);
829 DEFUN ("file-version-limit", Ffile_version_limit
, Sfile_version_limit
, 1, 1, 0,
830 doc
: /* Return the maximum number of versions allowed for FILE.
831 Returns nil if the file cannot be opened or if there is no version limit. */)
833 Lisp_Object filename
;
838 struct XABFHC xabfhc
;
841 filename
= Fexpand_file_name (filename
, Qnil
);
843 xabfhc
= cc$rms_xabfhc
;
844 fab
.fab$l_fna
= XSTRING (filename
)->data
;
845 fab
.fab$b_fns
= strlen (fab
.fab$l_fna
);
846 fab
.fab$l_xab
= (char *) &xabfhc
;
847 status
= sys$
open (&fab
, 0, 0);
848 if (status
!= RMS$_NORMAL
) /* Probably non-existent file */
850 sys$
close (&fab
, 0, 0);
851 if (xabfhc
.xab$w_verlimit
== 32767)
852 return Qnil
; /* No version limit */
854 return make_number (xabfhc
.xab$w_verlimit
);
863 return Fcons (make_number (time
>> 16),
864 Fcons (make_number (time
& 0177777), Qnil
));
867 DEFUN ("file-attributes", Ffile_attributes
, Sfile_attributes
, 1, 1, 0,
868 doc
: /* Return a list of attributes of file FILENAME.
869 Value is nil if specified file cannot be opened.
870 Otherwise, list elements are:
871 0. t for directory, string (name linked to) for symbolic link, or nil.
872 1. Number of links to file.
875 4. Last access time, as a list of two integers.
876 First integer has high-order 16 bits of time, second has low 16 bits.
877 5. Last modification time, likewise.
878 6. Last status change time, likewise.
880 This is a floating point number if the size is too large for an integer.
881 8. File modes, as a string of ten letters or dashes as in ls -l.
882 9. t iff file's gid would change if file were deleted and recreated.
883 10. inode number. If inode number is larger than the Emacs integer,
884 this is a cons cell containing two integers: first the high part,
885 then the low 16 bits.
886 11. Device number. If it is larger than the Emacs integer, this is
887 a cons cell, similar to the inode number.
889 If file does not exist, returns nil. */)
891 Lisp_Object filename
;
893 Lisp_Object values
[12];
896 #if defined (BSD4_2) || defined (BSD4_3)
903 filename
= Fexpand_file_name (filename
, Qnil
);
905 /* If the file name has special constructs in it,
906 call the corresponding file handler. */
907 handler
= Ffind_file_name_handler (filename
, Qfile_attributes
);
909 return call2 (handler
, Qfile_attributes
, filename
);
911 encoded
= ENCODE_FILE (filename
);
913 if (lstat (XSTRING (encoded
)->data
, &s
) < 0)
916 switch (s
.st_mode
& S_IFMT
)
919 values
[0] = Qnil
; break;
921 values
[0] = Qt
; break;
924 values
[0] = Ffile_symlink_p (filename
); break;
927 values
[1] = make_number (s
.st_nlink
);
928 values
[2] = make_number (s
.st_uid
);
929 values
[3] = make_number (s
.st_gid
);
930 values
[4] = make_time (s
.st_atime
);
931 values
[5] = make_time (s
.st_mtime
);
932 values
[6] = make_time (s
.st_ctime
);
933 values
[7] = make_number (s
.st_size
);
934 /* If the size is out of range for an integer, return a float. */
935 if (XINT (values
[7]) != s
.st_size
)
936 values
[7] = make_float ((double)s
.st_size
);
937 filemodestring (&s
, modes
);
938 values
[8] = make_string (modes
, 10);
939 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
940 dirname
= Ffile_name_directory (filename
);
941 if (! NILP (dirname
))
942 encoded
= ENCODE_FILE (dirname
);
943 if (! NILP (dirname
) && stat (XSTRING (encoded
)->data
, &sdir
) == 0)
944 values
[9] = (sdir
.st_gid
!= s
.st_gid
) ? Qt
: Qnil
;
945 else /* if we can't tell, assume worst */
947 #else /* file gid will be egid */
948 values
[9] = (s
.st_gid
!= getegid ()) ? Qt
: Qnil
;
949 #endif /* BSD4_2 (or BSD4_3) */
950 /* Cast -1 to avoid warning if int is not as wide as VALBITS. */
951 if (FIXNUM_OVERFLOW_P (s
.st_ino
))
952 /* To allow inode numbers larger than VALBITS, separate the bottom
954 values
[10] = Fcons (make_number (s
.st_ino
>> 16),
955 make_number (s
.st_ino
& 0xffff));
957 /* But keep the most common cases as integers. */
958 values
[10] = make_number (s
.st_ino
);
960 /* Likewise for device. */
961 if (FIXNUM_OVERFLOW_P (s
.st_dev
))
962 values
[11] = Fcons (make_number (s
.st_dev
>> 16),
963 make_number (s
.st_dev
& 0xffff));
965 values
[11] = make_number (s
.st_dev
);
967 return Flist (sizeof(values
) / sizeof(values
[0]), values
);
970 DEFUN ("file-attributes-lessp", Ffile_attributes_lessp
, Sfile_attributes_lessp
, 2, 2, 0,
971 doc
: /* Return t if first arg file attributes list is less than second.
972 Comparison is in lexicographic order and case is significant. */)
976 return Fstring_lessp (Fcar (f1
), Fcar (f2
));
982 Qdirectory_files
= intern ("directory-files");
983 Qdirectory_files_and_attributes
= intern ("directory-files-and-attributes");
984 Qfile_name_completion
= intern ("file-name-completion");
985 Qfile_name_all_completions
= intern ("file-name-all-completions");
986 Qfile_attributes
= intern ("file-attributes");
987 Qfile_attributes_lessp
= intern ("file-attributes-lessp");
989 staticpro (&Qdirectory_files
);
990 staticpro (&Qdirectory_files_and_attributes
);
991 staticpro (&Qfile_name_completion
);
992 staticpro (&Qfile_name_all_completions
);
993 staticpro (&Qfile_attributes
);
994 staticpro (&Qfile_attributes_lessp
);
996 defsubr (&Sdirectory_files
);
997 defsubr (&Sdirectory_files_and_attributes
);
998 defsubr (&Sfile_name_completion
);
1000 defsubr (&Sfile_name_all_versions
);
1001 defsubr (&Sfile_version_limit
);
1003 defsubr (&Sfile_name_all_completions
);
1004 defsubr (&Sfile_attributes
);
1005 defsubr (&Sfile_attributes_lessp
);
1008 Qcompletion_ignore_case
= intern ("completion-ignore-case");
1009 staticpro (&Qcompletion_ignore_case
);
1012 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions
,
1013 doc
: /* *Completion ignores filenames ending in any string in this list.
1014 Directories are ignored if they match any string in this list which
1016 This variable does not affect lists of possible completions,
1017 but does affect the commands that actually do completions. */);
1018 Vcompletion_ignored_extensions
= Qnil
;